@article{PMIHES_1998__S88__9_0,
     author = {Michel, Louis},
     title = {Pr\'eface},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {9--9},
     year = {1998},
     publisher = {Institut des Hautes Etudes Scientifiques},
     volume = {S88},
     language = {en},
     url = {https://www.numdam.org/item/PMIHES_1998__S88__9_0/}
}